From: Simon Glass <sjg@chromium.org>
To: u-boot@lists.denx.de
Subject: [PATCH 08/18] serial: add uart driver for MediaTek MT7620 SoC
Date: Mon, 26 Oct 2020 22:51:55 -0600 [thread overview]
Message-ID: <CAPnjgZ3P0_rTOhgwQgAGWcwbteFwpOpD1NU8iKy83B9srafAhw@mail.gmail.com> (raw)
In-Reply-To: <1602833759-19379-1-git-send-email-weijie.gao@mediatek.com>
Hi Weijie,
On Fri, 16 Oct 2020 at 01:36, Weijie Gao <weijie.gao@mediatek.com> wrote:
>
> This patch adds uart support for MediaTek MT7620 and earlier SoCs.
>
> The UART used by MT7620 is incompatible with the ns16550a driver.
> All registers of this UART have different addresses. A special 16-bit
> register for Divisor Latch is used to set the baudrate instead of the
> original two 8-bit registers (DLL and DLM).
>
> The driver can be built without DM which is useful for tiny SPL.
>
> Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
> ---
> drivers/serial/Kconfig | 20 ++
> drivers/serial/Makefile | 1 +
> drivers/serial/serial.c | 2 +
> drivers/serial/serial_mt7620.c | 350 +++++++++++++++++++++++++++++++++
> 4 files changed, 373 insertions(+)
> create mode 100644 drivers/serial/serial_mt7620.c
Why do you need to build without DM? We have of-platdata which
provides for smaller images. What is the SRAM size available?
Regards,
Simon
next prev parent reply other threads:[~2020-10-27 4:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-16 7:35 [PATCH 08/18] serial: add uart driver for MediaTek MT7620 SoC Weijie Gao
2020-10-27 4:51 ` Simon Glass [this message]
2020-10-29 9:47 ` Weijie Gao
2020-10-29 14:30 ` Simon Glass
2020-10-30 3:20 ` Weijie Gao
2020-10-30 18:15 ` Simon Glass
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